SULO Expert

New product

A minimalist, high performance quilt for the experienced user  

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UPDATE, 1-20-21: We are terminating the development of the SULO, due to leaking issues of the down fill with the 7d material. This is the third time we have sourced and rejected 7d. I think it's over; not worth our time anymore for an ounce of savings. 

Luxury third! The SULO is pure warmth to weight efficiency for the minimalist hiker who prioritizes performance over do-it-all versatility.

A hybrid between a quilt and a bag, the SULO's mummy shaped leg/foot section is closed from the bottom up to near butt level, with the much shorter open underside controlled by our draft fighting ETC. Together with an aggressively shaped, body hugging differential cut and the proven Nunatak down tech of narrow tapered vertical baffles properly filled, the SULO is efficient, light and simple to use in a variety of conditions.

At a true shoulder width of 52" the SULO has a girth at the upper end of what most calls a size 'regular'. Choosing the oversized 58" width will put you solidly in the territory of 'wide'.

The length recommendations outlined in the charts results in a neck to chin high fit. The use of additional head insulation is recommended.

For the SULO Expert we use a gossamer thin 7d nylon taffeta fabric inside and out. 


7d shell and liner

Body shaped differential cut

Long closed leg/foot section


Neck drawcord

Single under-body strap, optional

Narrow tapered baffles

Generous down fill

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SULO Expert

SULO Expert

A minimalist, high performance quilt for the experienced user  

Product Options
Temperature Rating

The rating reflects the lowest temperature during which a well conditioned hiker can expect to remain comfortable throughout a full night. Adequate shelter and ground pad must be used.

30°F / 0°C. Includes differential cut
25°F / -4°C. Includes differential cut
20°F / -7°C. Includes differential cut
Inside Length
To determine the correct length please refer to the measurements in the chart.
Shoulder Width
The true width after stuffing and finishing.
Shell fabric
Forest Green 7d
Liner fabric
Dark Grey 7d
Down Type

We use 900 fill power goose down, certified responsibly sourced.

Hyper-Dry moisture resistant down will help combat the effects of perspiration, misting tents and damp air. Nunatak products made with Hyper-Dry down will have a slight increase in bulk over those made with untreated down.

Strap Package
This option consists of one or two elastic cords and cord locks, pulling the quilt together under the user on the coldest nights
Edge Tension Control

This design involves two user adjustable shock cords running lengthwise along the left and right quilt edges. On cold nights tension the cords to shorten the edges and draw them under you; during milder conditions completely slacken the cords to have the blanket throw feel. Go here for more info

Down Overfill
Adding overfill can prolong the life of the down, help maintain loft during moist conditions, boost the temperature rating by a small amount and keep the down volume from shifting. The amount depends on the product, the size and the rating.
No Thanks
Overfill evenly throughout
Stuff Sack
Our stuff sacks are pretty dope, but current weight saving trends in ultralight circles eschews this once crucial item. So, opt out and save $ while also being very current.
Yes, please include a stuff sack
No stuff sack